Rocker-shaft bearing for looms



Feb. 15,1927. 1,618,125

A. HARRIS ROCKER SHAFT BEARING FOR LOOMS Filed June 17, 1925 mllltmlmlm.

as i

mnmlilu as g the parts supported thereby,

Patented 15, 1927.

ALEX HARRIS, on cnfcornn ratios, iiinsseeiausirr rsgassiei'oekro iinlirnnlcon} ZE'ORATION, or HOPEDALE; miissnciiusn rrsncoaroaa rioii or Mama Rosana-sneer sneninefron floor/is"? Application filed when, 1925. SeriaI ingress.

, This invention relates to, the lay rocker 1 shaft bearings, of which there are two, one

located in 'each side frame of the loom.

These bearings support the, weight of the lay swords, the lay, the shuttle boxes and an other mechanism carried by "the la As the lay is oscillated at each pick during the weaving operation, this ,continual 'movement, with its continual reversal of direcrocker shaft and its "bearings, which,fif not compensated for,'results in lost motion and the downward displacement ofthe lay and thus afiecting the cooperation of thelay and the parts carried thereby with the remainder of the loom and interfering with the proper weaving operation.

'The main object ofthe presentinve'ntion is 'to'provide a simple and effective construction' of rocker shaft bearing which 7 shall be readily adjustable-t compensate for this deleterious wear as it occurs without alteringthe position of'the lay rocker shaft itself. It is quite important that the lay rocker shaft, which is carefully adjusted into required and definite; position with respect to the loom..fraine when'theloom is ing description assembled, shall remain in" suchkposition. The present invent on,

sures that the position of the lay rocker 'ects of will appear more fully frointhe accompany and drawings and will be particularly pointed out in the claims.

As the construction with which the present invention is concerned is the same at .both sides-of the loom, versal of the parts, it will'be suf'ricient' to illustrate and describe a preferred form of construction at one as; the invention relates side of the looin only, and, furthermore, solely to the rocker shaft bearing, it is only necessary to illustrate and "describe those parts of the loom immediately concerned therewith. 1

In I the drawings Fig. '1 is a-view of a front'portionof a loom partially in vertical cross ing from theinterior toward the left-ha-nd side frame with a preferred form of the-i section 1001(- present invention embodied therein.

in'g upon thefloon lay swords at I while permitting ad'- justnient to compensate for -wear,leav1es' u'ndisturbed this assembly adj ustment] and inii i oftlie looms- It will thusbe seen,

the invention poiiited out; 1 that except for the" re-- two main: parts, namely, '1 member and a lower bearing member. The

adjustment, remain assur-ingtheproper posit onof' the rocker 2 is a view in sideelevation looking toward thezout'sideior'the opposite side'of' v th'e'lower POIiJlOlI Of the loomframe shown inlFig, 1.

. a V16\VOli i1l16 com lete bearin g with the Fig. 5 is a view'in-cross section taken on Fig 6 is a view in vertical cross section I taken on the 11116 6-6 of Fig. 2.

The side frames of the loom,

one 1 of which is illustrated, are connected transversely at the'front by the breast beam "Qandtlie lay rocker" shaft 3. name is usually provided withhorizontal,

-Each, side outwardly extending flanges or feet 4 rest- The lay rocker shaft supports, and] has mounted thereon inside the side frames, the lay swords 5,'usuall'y formed at the bottom with hubportionsfi secured to the shaft by set screws 7 The their upper ends support the I looin frame-shown inhorizontal I cross section 7 tion, causes considerable wear'between the I i the line'5 5of Fig.4.

the left-hand transverselyextending lay 8 with therace plate 9' uponwhich'the shuttle travels, the

shuttle" :boxes ,atreach send -w'hic 'h are not shown, the hand rail '10 with the reed and The lay rocker shaft load ,isc'onstantly oscil the other "usual parts. 8 withxits supported I lat'ed during the weaving operation bye connection .711, usually; from the crank shaft the weight of the. lay Swords, thelay I together witl the shock andjar of this constant oscillatory movement produce wear I v I particularly between the lower surface of the lay rocker shaft and that portion ofthe bearing surface cooperating shaft and all the shaft which shall, enemas usual assembly in'fixed position, thus as already ,1 i

and the supported parts,

therewithwhich, unless compensated' for, results in. a

shownin detail in a prec 'Itlcomprises essentially an upper bearing formen, isfdesigned to present an extended-' upper bearing surface for the lay rocke'r roekershaft and of V for. a reasonable adjustment or positionassembling the parts, the lay may be accurately located.

bolts 16 mounted in the side frame. 7 plate 13 may thus be adjusted on the bolts to position the bearing portion 14 and consequently the rocker shaft 3. Usually after the proper position has been .elfected, the .plate 13 is secured in place by pins 17 passed ,therethrough and through the side frame. ,The lower jasu'bstantially flat plate 18 extendingalongplate .13, but at its center dropping.

. comprises integral with the wardly facing segmental hub '25 extending shaft and its supported parts, while the latter is designed also to present an'extended'lower bearing surface to be readily adjustable to compensate for wear without disturbing the required positions of the rocker shaft and the upper bearing member.

The side frame of the 100111 isprovided' with a transverse aperture 12 to permit the passage therethrough of the bearing portions ofithe bearing members with the lay sufficient size to allow so that, particularly in rocker shaft Both bearing members are clamped together face to face and arelocated on the outer face of the side ing in any direction frame where they are readily accessible.

The-upper bearing member comprises a generally, flat plate .18 {extending well to ;each side of the aperture 12 and, when in position, resting against the outer face of the loom frame. This plate has formed integral therewith a downwardly facing segmental hub Mof considerable length and adapted to extend well through the aperture 12 and afford an extended bearing .for the shaft 3. The plate 13 isprovided near each end with apertures 15 which embrace The bearing member also comprises side the .belowQthe position of the shaft 3. This plateatf with 'a stop 19. adapted tov swing against a shoulder 20 on the plate, 13 to limit theset screw seats on the flange foot 4: of the t side frame and presents a means, for vertical .ly adjusting the free end of the with respect to the side frame and conse-v quently with respect'to the plate 13 secured thereto. The lower .bearing member also plate 18 an upfrom the plate through the'aperture of-the frame 12 and presenting'an extended lower bearing surface for the rocker shaft 3.

[As will-be seen, particularly from Fig. 5, the downwardly facing segmental hub 14 has a substantially semi-circular bearing one end is pivotally mounted upon. 7 one of the bolts 16 and is usually provided plate 18 2 surface, andbelow this bearing surface the side walls of the hub 26 are formed concentrically with the pivotal axis of the bolt 16 uponwhich the plate 18 pivots. LThese side walls 26 continue through the plate 13 p and thus form an opening through the plate beneaththe bearing area of. the hub. The upwardly facing segmental hub 25 projects through this opening in the plat 13 and .lfitsin between the walls .26, and its side vvallsia"? are substantially concentric with this pivotal a-Xis. Hence, as the lower hear- .ing member is adjusted about its pivotal axis by means of the adjusting"device 23, I or; otherwise, i he upwardly facing segmental 25 is adjusted toward or from the down Iwardly facing segmental hub 1%.

ltwill thusbe seen that the downwardly facing segmental hub. 14: which constitutes theupper bearing surface for the lay rocker shaft, after assembling, always remains in fixed position and as this bearingsurface is Sulojectto aqvery little wear, the position of the lay rocker shaft, if held up against it, remains unchanged. It will also be seen that the lower bearingniember provides a simple and efiicient means by which i any wear tal zing place at the lower bearing surface of the rocker. shaft is readilycom- ,pensated for by adjusting thislower bearing member upwardly. very accurately bymeans of the set screw '23 and the lower. bearing member after adjustmei'it is held very rigidly and firmly in place by ;tight-'ening up the nuts .28 on the {bolts 16. lWhen these nuts are tightened up, the two bearing members are firmly ,se cured together and. re also firmly secured to the loom sideiframe. j a

The extended segmental hubs present both below and above-the rocker shaft long extended bearings throughout their entire length. The lower. bearing member on its outer face "is :also provided with recess or depression 29 to] provide clearance for .theusual hub ;on the bearingshoe member, not shown, Which'is mountedon the lay rocker shaft to support the picker shoe.

There is thus presented a simple, practical and efficient lay rocker shaft bearing which may be readily applied to existing looms, as well as embodied in looms when first constructed. Theprinciple of adjust,- ment of the lower bearing member by pivoting atone end on the upper bearing member andprovided with a device for verticallyadjusting the free end is also applicable to other than the is claimed as new, and desired to be secured y Letters Pat n is: I i

V 1. In a-lay rock-er shaft bearing for looms, the combination ofa side frame ofthe loom having ;a transverse aperture andv a foot flange; an upper bearing member compris- This may ,bedone loa segmental hub structure. Having thus describedmy invent on, what 7 having an opening inentary ing a plate resting against the outer face of the frame and a downwardly facing segmental hub projecting therefrom through the aperture in the frame,

therethrough beneath the bearing area of the said hub; and a lower bearing member comprising aplate resting against the outer face of the first plate, pivoted at one end on the said first plate and provided at the other end with an adjusting device seated on .the frame foot flange, and an upwardly facing segmental hub projecting therefrom through the first plate opening and through the frame aperture and presenting a bearing surface beneath and complementary to that of the first segmental hub, whereby an extended bearing is presented, to both the top and bottom surfaces of the rocker shaft with the upper bearing surface throughout always in fixed position while the entire lower bearing surface, where wear occurs, is readily and accurately adjustable to compensate for such Wear without frame, the said plate having an openin therethrough beneath the bearing area 0 the said hub; and a lower bearing member comprising a plate resting against the outer face of the first plate and pivoted at one means for verend on the said first plate, tically adjustingthe free end of the second plate with respect to the first plate, and an upwardly facing segmental hub projecting therefrom through the first plate opening and through the frame aperture and presenting a bearing surface beneath and completo that of the first segmental hub, whereby an extended bearing is presented to both the top and bottom surfaces of the rocker shaft with the upper bearing-surface throughout always in fixed position while the entire lower bearing surface, where wear occurs, is readily and accurately adjustable to compensatexfor such wear without dis,- turbing the required position ofv-the rocker shaft. 3. A lay rocker through said opening are concentric with the pivotal axis of the second plate.

4. A lay rocker shaft bearing having the construction' defined in claim 2,

in which both plates are the said plate" the combination a bearing surface beneath the by adjusting thesecond plate about" disturbing the required posiof tion of the rocker shaft.

' adjusting'the free shaft bearing for looms. having the construction defined'in claim 2,

for looms firmly secured together and to the side frame in properly adjusted position by bolts, one coaxial with said pivotal axis andv one at the opposite ends of the plates, and in which. the second plate is vertically slotted to fit the latter required adjustbolt and provide for the merit. v

5. In a lay rocker shaft bearing for looms,

having "a transverse aperture and a foot flange; plate restlng against the outer face of the frame and a bearing portion projecting therefrom through the aperture in the frame; and a second bearing member comprising a plate resting against the outer face of the first plate, pivoted at one end on the a bearing member comprising a of a side frame of the loom 5 said first plate, and provided at the other end with an adjusting frame foot flange, the said plate having a bearing portion facing upwardly to present rocker shaft, whereby its pivotal axis on the first plate, wear the shaft'and bearing maybe compensated for without disturbing the required position of the rocker shaft.'

6. A lay rocker shaft bearing for looms 'having the construction defined in claim'5,

in which both plates are firmly secured together and to'the side frame in properly'i bolts, one coaxial with adjusted position by said pivotal axis and ends of the plates, and in which the second plate is vertically slotted to fit the latter bolt and provide for the required adjustment; I c i 7. In a lay rocker shaft bearing for looms, the combination of aside frame of a loom having a transverse aperture; a bearing plate resting against member comprising a therouter face of the frame and a bearing device seated on the one at the opposite portion projecting therefrom through the aperture in the frame; a pair of bolts loe cated one at each end of the plate passing through the plate and them together; and a second bearing member comprising a plate'resting against the outer faceof the firstplate, pivoted at one end on one of said bolts, provided atthe other end with a verticaL slot fitting over the other bolt' and with means for vertically end with respect to the frame and securing first plate, the said "second plate having a- I a bearing surface beneath the rocker shaft bearing portion facing upwardly to present whereby, by adjusting the-second plate about,

its pivotal axis,

wear of the shaft and bearing may be compensated for without disturbing the required position of the rocker shaft.' 7 t ALEX HARRIS v 125. 'In testimony whereof, I have signedmy name to this'specification. 

